FERMI AND SWIFT GAMMA-RAY BURST AFTERGLOW POPULATION STUDIES

被引:85
作者
Racusin, J. L. [1 ]
Oates, S. R. [2 ]
Schady, P. [3 ]
Burrows, D. N. [4 ]
de Pasquale, M. [2 ]
Donato, D. [1 ,5 ,6 ,7 ]
Gehrels, N. [1 ]
Koch, S. [4 ]
McEnery, J. [1 ]
Piran, T. [8 ]
Roming, P. [4 ,9 ]
Sakamoto, T. [1 ]
Swenson, C. [4 ]
Troja, E. [1 ]
Vasileiou, V. [1 ,10 ,11 ]
Virgili, F. [12 ]
Wanderman, D. [8 ]
Zhang, B. [12 ]
机构
[1] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[2] Univ Coll London, Mullard Space Sci Lab, Surrey, England
[3] Max Planck Inst Extraterr Phys, D-37075 Garching, Germany
[4] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA
[5] Univ Maryland, Dept Phys, College Pk, MD 20742 USA
[6] Univ Maryland, Dept Astron, College Pk, MD 20742 USA
[7] Ctr Res & Explorat Space Sci & Technol, Greenbelt, MD 20771 USA
[8] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel
[9] SW Res Inst, Dept Space Sci, San Antonio, TX 78238 USA
[10] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21228 USA
[11] Univ Montpellier 2, Lab Phys Theor & Astroparticules, CNRS, IN2P3, Montpellier, France
[12] Univ Las Vegas, Dept Phys, Las Vegas, NV USA
关键词
gamma-ray burst: general; gamma rays: general; X-rays: bursts; LARGE-AREA TELESCOPE; HIGH-ENERGY EMISSION; INITIAL LORENTZ FACTOR; LIGHT CURVES; ALERT TELESCOPE; EXTERNAL SHOCK; GRB; 080916C; SPECTRAL COMPONENTS; OPTICAL AFTERGLOWS; HOST GALAXIES;
D O I
10.1088/0004-637X/738/2/138
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The new and extreme population of gamma-ray bursts (GRBs) detected by the Fermi Large Area Telescope (LAT) shows several new features in high-energy gamma rays that are providing interesting and unexpected clues into GRB prompt and afterglow emission mechanisms. Over the last six years, it has been Swift that has provided the robust data set of UV/optical and X-ray afterglow observations that opened many windows into components of GRB emission structure. The relationship between the LAT-detected GRBs and the well-studied, fainter, and less energetic GRBs detected by the Swift Burst Alert Telescope is only beginning to be explored by multi-wavelength studies. We explore the large sample of GRBs detected by BAT only, BAT and the Fermi Gamma-ray Burst Monitor (GBM), and GBM and LAT, focusing on these samples separately in order to search for statistically significant differences between the populations, using only those GRBs with measured redshifts in order to physically characterize these objects. We disentangle which differences are instrumental selection effects versus intrinsic properties in order to better understand the nature of the special characteristics of the LAT bursts.
引用
收藏
页数:12
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